RIVERHEAD - A medical examiner says a Suffolk County inmate with a tracheal tube died because his tube was blocked by mucous.

Arthur Thomas, 22, of Mastic, died in June at the Suffolk County Jail. His family is suing the county for $250 million because they claim the tube was not being cleaned regularly by medical staff.The New York State Commission of Correction is currently investigating Thomas' death.

Family to sue Suffolk County over death of son in jail